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How to Repair Fiat 500 Keys There are many reasons why your Fiat 500 key fob may cease to function. One of the most frequent is when the small “watch” battery that's inside dies. It's an 3.3 Volt lithium, CR2032, you can buy just about anywhere for under $3. A locksmith is the ideal choice to call if need a new car key for the classic Fiat model. United Locksmith offers this service and offers all the parts and tools required. Keys Fiat keys may appear to be simple, but inside is a chip that communicates with the immobiliser system of your vehicle. If the chip isn't present, or not properly programmed to the immobiliser, your car will not be able to start. Car Keys Solutions can offer you the latest technology and equipment from dealers to repair your Fiat key, regardless of whether the key has been damaged or lost. The possession of a spare key is the most efficient way to keep your car running in the event of a crisis or being locked out. We can supply you with a standard blank key or a remote fob. We use the highest quality blanks we can find and provide rapid turnaround time to ensure you are back on the road as quickly as possible. Some people prefer to visit Fiat Dealerships to obtain a new key. We can provide an easier and less expensive service. We can even come to you, saving you the cost of towing your car to the dealer. This can also cut down on the waiting period which can take up to 10 days for dealers. Remotes Remote controls for Fiat cars look like the keys, but they have an IR (infrared) LED on the bottom. This LED sends an electronic signal to the device, which opens or starts the vehicle when it is pressed. The microprocessor inside the key converts the signal into a number that is then sent to the device. This process is known as “keyless entry”. The more modern your car is, the more likely you will have an electronic keypad. The more recent your car and the more features you'll likely have. This includes locking and unlocking your car at the pushing a button or opening the doors without touching the handle, and much more. The key fob has an integrated circuit chip that connects to the immobiliser system in the car. The system can tell whether the correct key is present by looking for a particular sequence of digits in the transponder chip. The vehicle will not start if the chip is missing or if it's not programmed to the correct immobiliser system. If the key fob is damaged, a locksmith may create a new one. They'll also have to program the replacement key to sync with the vehicle's immobiliser. It is recommended to provide your locksmith's details regarding your vehicle whenever they call. Keyless Entry If you have an entry system that is keyless on your Fiat 500, you can lock and unlock your car at any time by pressing of one button. This technology is becoming more widespread in all cars of all ages and types and can add security and convenience to your car's use. Check to see if your remote keyless entry system isn't working. The battery that powers the coin inside the fob may be dead. If the battery is empty replace it with a fresh one that has the same voltage, size, and type as the original. It is also important to ensure that the battery's contacts are free of corrosion or dust. The key fob's rubber seals that shield the chip inside from water, however, prolonged exposure to soapy or salty water may cause the chip to fail. If your key fob has been exposed to water, take out the battery and allow it to dry completely before putting it back into. You can also clean the electronic chip using isopropyl ethanol or electronic cleaner. Keyless entry systems are more secure than traditional systems, because it rolls up the code used to unlock your car after each use. This means that hackers won't have the ability to gain permanent access to your vehicle even if they intercept the signal. Transponders Fiat uses a crypto key transponder system. This means that the keys/transponders have to be encoded with a secret code generated by the Body Control Module (BCM) before being “programmed” into the BCM. A key that is blank and isn't programmed cannot be programmed since the BCM must read and write its secret key into the transponder before locking it. This process is called cloning. These are brand new replacement outer case SIP22 transponder key for your Fiat 500. fiat key fob have a chip inside that opens the doors and starts the car. They will need to be cut professionally by a locksmith to fit your ignition.